This circuit was originally designed to measure capacitance with an ICL7107 but can be used with other digital modules. The circuit is from Electronics Now magazine from November 1996.
This circuit is based on documentation from the operational's own manufacturer, from the 80's. The same...
Found in a publication from the 60's, this circuit uses the CK722, germanium transistor of the...
This is the circuit of a MW commercial radio obtained in a 1967 publication. The transistors are...